In 2025, 448 US boys were named Koen, making it the 623rd most common boys’ name of the year, up 58 places from #681 in 2024. That is 47 more than the 401 boys named Koen in 2024. Its best rank for boys was #606, reached in 2023. That year also had the most boys given the name: 468. For comparison, it was #1,013 in 2015 and unranked in 1950.
Social Security card records list Koen in 30 years of the 146 from 1880 to 2025, starting in 1996 with 5 babies. In all, 5,190 US babies have been given the name, 0.4% of them girls and 99.6% boys. Its busiest decade was the 2020s, with 2,018 babies named Koen.
Over the 10 years from 2016 to 2025, 2,646 US boys were named Koen; the busiest of those years was 2023, with 468. In 2025 that was about 1 in 3,813 of the boys in SSA’s list for the year.
Among the states, Koen ranked highest in Hawaii in 2025, at #139 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Cohen (23,429 babies since 1880), Kohen (8,561 babies since 1880) and Coen (4,523 babies since 1880). Rarer spellings such as Kuan are summarised on this page.